• Watersheds of the United States by state‎ (6 C, 2 P)
• Watersheds of the West Coast (U.S.)‎ (2 C, 3 P)

*

• Endorheic basins of the United States‎ (3 C, 23 P)

A

• ACF River Basin‎ (2 C, 38 P)
• ACT River Basin‎ (1 C, 11 P)

C

• Catskill/Delaware watersheds‎ (1 C, 19 P)
• Chesapeake Bay watershed‎ (9 C, 59 P)
• Croton Watershed‎ (20 P)

G

• Great Basin‎ (7 C, 6 P)
• Great Salt Lake watershed‎ (4 C, 9 P)

J

• James River Watershed‎ (1 C, 2 P)

M

• Mississippi River watershed‎ (10 C, 24 P)

P

• Papakating Creek watershed‎ (14 P)
• Paulins Kill watershed‎ (11 P)

R

• Rappahannock River watershed‎ (1 C)

T

• Tularosa Basin‎ (1 C, 24 P)

U

• United States hydrologic unit system‎ (3 C, 2 P)

Y

• Yadkin-Pee Dee River Basin‎ (2 C, 12 P)

.

• List of Great Basin watersheds

*

• Hydrologic unit system (United States)

A

• Acequia Madre (Santa Fe)
• ACF River Basin
• ACT River Basin
• Alaska water resource region
• Arkansas–White–Red water resource region

B

• Blind Brook watershed

C

• California water resource region
• Cameron Run Watershed
• Caribbean water resource region
• Carson Desert
• List of drainage basins in Colorado
• Columbia River drainage basin
• Croton River watershed
• Croton Watershed

D

• Dugway Brook Watershed

E

• Environmentally Concerned Citizens of South Central Michigan

F

• Fourche Creek (Arkansas)

G

• Galisteo Basin
• Great Basin water resource region
• Great Lakes Basin
• Great Lakes water resource region
• Green River Basin

H

• Hawaii water resource region
• Honey Hollow Watershed
• Hudson–Hoosic Watershed

K

• Klamath Basin

L

• Lake Erie Basin
• Lake Erie Watershed (Pennsylvania)
• Lower Colorado water resource region
• Lower Mississippi water resource region

M

• Merrimack River
• Mid Atlantic water resource region
• Minnehaha Creek Watershed District
• Missouri water resource region

N

• Nemaha River basin
• New England water resource region

O

• Ohio water resource region

P

• Pacific Northwest water resource region
• Portland Water Bureau

R

• Rio Grande water resource region

S

• Santa Fe Watershed Association
• Souris–Red–Rainy water resource region
• South Atlantic–Gulf water resource region

T

• Tennessee water resource region
• Texas–Gulf water resource region
• Toms River
• Tonto Basin

U

• Umpqua Basin
• Upper Colorado water resource region
• Upper Mississippi water resource region

W

• Walla Walla Basin Watershed Council
• Water resource region
• Watershed district (Minnesota)
• Watershed Protection and Flood Prevention Act of 1954

Y

• Yadkin–Pee Dee River Basin